Upon the coronation of Aegon's heir, King Aenys I Targaryen, rebellions rose throughout the realm. The first of these challenges was by a bandit outlaw known as Harren the Red, who claimed to be a grandson of King Harren the Black. Alyn personally led the campaign against Red Harren and successfully caught and cornered the outlaw king. Harren killed Alyn but was subsequently slain by Alyn's squire, Bernarr Brune.[2][1]